Dielectronic and Radiative Recombination of Lithium-like Gold

The first measurements on radiative and dielectronic recombination (RR and DR) of very highly charged ions at energies E sub cm as low as 0-50 eV are reported. Novel techniques were employed at the heavy-ion storage ring ESR to obtain absolute recombination rates of Au exp 76+ (1s exp 2 2s). The inc...

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Bibliographic Details
Published in:Physical review letters 1992-11, Vol.69 (19), p.2768-2771
Main Authors: Spies, W, Muller, A, Linkemann, J
Format: Article
Language:English
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Summary:The first measurements on radiative and dielectronic recombination (RR and DR) of very highly charged ions at energies E sub cm as low as 0-50 eV are reported. Novel techniques were employed at the heavy-ion storage ring ESR to obtain absolute recombination rates of Au exp 76+ (1s exp 2 2s). The increase of the RR rate for E sub cm - > 0 could be recorded and single DR resonances in Au exp 75+ (1s exp 2 2p sub 3/2 6l exp j ) resolved. The experimental data allow sensitive judgement of calculations based on the Bethe--Salpeter approach to RR combined with results for DR from perturbative-relativistic, semirelativistic, and fully relativistic theories. Significant discrepancies are found only in the energy region of the 2p sub 3/2 6l sub 3/2 resonances.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.69.2768